Rufous-vented Whitetip

The rufous-vented whitetip (Urosticte ruficrissa) is a species of hummingbird in the "brilliants", tribe Heliantheini in subfamily Lesbiinae. It is found in Colombia, Ecuador and Peru. == Taxonomy and systematics == The rufous-vented whitetip and purple-bibbed whitetip (Urosticte benjamini) have been treated as conspecific and as distinct species, each by multiple authors. Since the early 2000s there is consensus that they are species in their own right. They are the only members of their genus and both are monotypic. == Description == The rufous-vented whitetip is 9 to 10 cm (3.5 to 3.9 in) long and weighs 4 to 4.2 g (0.14 to 0.15 oz). Both sexes have a medium-length straight black bill and a prominent white stripe behind the eye. Both have shining green upperparts and a forked tail, though the female's is not as deeply indented as the male's. Males have shining green underparts with buffy undertail coverts. The tail is dusky bronze; the central feathers have wide white tips. Females have white underparts spotted with green. The tail is dusky bronze with white tips on the outermost feathers. Juveniles are similar to females with the addition of brown edges on the head feathers. == Distribution and habitat…